Your backpack should weigh around 20-35 lbs for a typical overnight trip lasting 1-5 days in mild weather conditions.
Water will be one of the heaviest things in your pack at 2.2 lbs per liter!
Pack weight shouldn’t exceed more than 20% of your body weight.
Share gear like stoves, tents, & water filters with your adventure buddies and thus share the weight!
Dress like a cartoon character and wear the same thing everyday. Hey, nobody said that backpacking smelt like roses.
Bring plenty of underwear and a couple pairs of socks, but rewear your clothing for multiple days.